!function(win) {
    
     function resize() {
        var domWidth = domEle.getBoundingClientRect().width;
        if(domWidth / v > 640){
            domWidth = 640 * v;
        }
        win.rem = domWidth / 16;
        domEle.style.fontSize = win.rem + "px";
     }
     var v, initial_scale, timeCode, dom = win.document, domEle = dom.documentElement, viewport = dom.querySelector('meta[name="viewport"]'), flexible = dom.querySelector('meta[name="flexible"]');
     if (viewport) {
//          viewport：<meta name="viewport"content="initial-scale=0.5, minimum-scale=0.5, maximum-scale=0.5,user-scalable=no,minimal-ui"/>
     var o = viewport.getAttribute("content").match(/initial\-scale=(["']?)([\d\.]+)\1?/);
        if(o){
            initial_scale = parseFloat(o[2]);
            v = parseInt(1 / initial_scale);
        }
     } else {
        if (flexible) {
            var o = flexible.getAttribute("content").match(/initial\-dpr=(["']?)([\d\.]+)\1?/);
            if(o){
                v = parseFloat(o[2]);
                initial_scale = parseFloat((1 / v).toFixed(2))
            }
        }
     }
     if (!v && !initial_scale) {
        var n = (win.navigator.appVersion.match(/android/gi), win.navigator.appVersion.match(/iphone/gi));
        v = win.devicePixelRatio;
        v = n ? v >= 3 ? 3 : v >= 2 ? 2 : 1 : 1, initial_scale = 1 / v
     }
     //没有viewport标签的情况下
     if (domEle.setAttribute("data-dpr", v), !viewport) {
        if (viewport = dom.createElement("meta"), viewport.setAttribute("name", "viewport"), viewport.setAttribute("content", "initial-scale=" + initial_scale + ", maximum-scale=" + initial_scale + ", minimum-scale=" + initial_scale + ", user-scalable=no"), domEle.firstElementChild) {
            domEle.firstElementChild.appendChild(viewport)
      } else {
            var m = dom.createElement("div");
            m.appendChild(viewport), dom.write(m.innerHTML)
      }
     }
     win.dpr = v;
     win.addEventListener("resize", function() {
        clearTimeout(timeCode), timeCode = setTimeout(resize, 300)
     }, false);
     win.addEventListener("pageshow", function(b) {
        b.persisted && (clearTimeout(timeCode), timeCode = setTimeout(resize, 300))
     }, false);
     /* 个人觉得没必要完成后就把body的字体设置为12
     "complete" === dom.readyState ? dom.body.style.fontSize = 12 * v + "px" : dom.addEventListener("DOMContentLoaded", function() {
      //dom.body.style.fontSize = 12 * v + "px"
     }, false);
     */
     resize();
}(window);
//配置选项
    var SYS_GLOBAL_CONFIG = {
        protocol:"http",
        domain:"www.shidiquan.cn",
        frontPath:"/sdq_h5",
        contextPath:"/sdq"
    };
 var download={ androidUrl:"http://www.shidiquan.cn/sdq/h5/webService/appDownload/1",         
        iosUrl:"https://itunes.apple.com/cn/app/shi-de-quan/id1072042467?mt=8"
    
    };
